<template>
  
  <el-container class="home-container">
    <!-- 头部区 -->
    <el-header>
      <div>
        <img src="../assets/heima.png" alt="">
        <span>电商后台管理系统</span>
      </div>
      <el-button @click="logout" type="info">退出</el-button>
    </el-header>   
    <!-- 页面主体区 -->
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="isCollapse ? '64px': '200px'">
        <div @click="toggleCollapse" class="toggle-button">|||</div>
        <!-- 侧边栏菜单区 -->
        <el-menu :default-active="activePath" :router="true" :collapse-transition="false" :collapse="isCollapse" :unique-opened="true"  background-color="#333744" text-color="#fff" active-text-color="#409eff">
            <!-- 一级菜单 -->
            <el-submenu :index="'' +item.id "  :key="item.id" v-for="item in menulist">
              <!-- 一级菜单的模板区 -->
              <template slot="title">
                <!-- 图标 -->
                <i :class="iconsObj[item.id]"></i>
                <!-- 文本 -->
                <span>{{item.authName}}</span>
              </template>
<!-- 二级菜单 -->
<el-menu-item @click="saveNavState('/' +subItem.path + '')" :index="'/' +subItem.path + ''" v-for="subItem in item.children" :key="subItem.id">
    <template slot="title">
    <!-- 图标 -->
    <i  class="el-icon-menu"></i>
    <!-- 文本 -->
    <span>{{subItem.authName}}</span>
  </template>
</el-menu-item>
</el-submenu>
</el-menu-item>
</el-menu>
</el-aside>
<!-- 右侧主体 -->
<el-main>
    <!-- 路由占位符 -->
    <router-view></router-view>
</el-main>
</el-container>
</el-container>

</template>

<script>
    export default {
        data() {
            return {
                menulist: [],
                iconsObj: {
                    "125": 'iconfont icon-users',
                    "103": 'iconfont icon-tijikongjian',
                    "101": 'iconfont icon-shangpin',
                    "102": 'iconfont icon-danju',
                    "145": 'iconfont icon-baobiao'
                },
                // 是否折疊
                isCollapse: false,
                // 被激活的链接地址
                activePath: ""
            }
        },
        created() {
            this.getMenuList(),
                this.activePath = window.sessionStorage.getItem("activePath")
        },
        methods: {
            logout() {
                window.sessionStorage.clear();
                this.$router.push('/login')
            },
            // 獲取所有的菜單
            async getMenuList() {
                const {
                    data: res
                } = await this.$http.get('menus')
                if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
                this.menulist = res.data
                console.log(res);
            },
            // 点击按钮切换菜单的折叠与展开
            toggleCollapse() {
                this.isCollapse = !this.isCollapse
            },
            // 保存连接的激活状态
            saveNavState(activePath) {
                window.sessionStorage.setItem("activePath", activePath)
                this.activePath = activePath
            }
        },
    }
</script>

<style lang="less" scoped>
    .home-container {
        height: 100%;
    }
    
    .el-header {
        background-color: #373D41;
        display: flex;
        justify-content: space-between;
        padding-left: 0;
        align-items: center;
        color: #fff;
        font-size: 20px;
    }
    
    .el-header div {
        display: flex;
        align-items: center;
    }
    
    .el-header div span {
        margin-left: 15px;
    }
    
    .el-aside {
        background-color: #333744;
    }
    
    .el-aside .el-menu {
        border-right: none;
    }
    
    .el-main {
        background-color: #eaedf1;
    }
    
    .iconfont {
        margin-right: 10px;
    }
    
    .toggle-button {
        background-color: #4a5064;
        color: #fff;
        font-size: 10px;
        line-height: 24px;
        text-align: center;
        letter-spacing: 0.2em;
        cursor: pointer;
    }
</style>